A rep for Masterpiece confirmed to AccessHollywood.com that the maid to Cora Crowley, The Countess of Grantham (Elizabeth McGovern), who in Season 3 caused major trouble for Thomas, is leaving Downton to do other things.

While in Scotland - and after she realized Wilkins, the maid to Lady Susan MacLare, had attempted to spike her drink at a party - O'Brien went up to Shrimpy's wife and had a conversation.

The presumption, of course, was that O'Brien was working an angle. O'Brien did indicate her delight over the idea of a change of scenery when Wilkins whined earlier in the episode about having to move to India with the MacLare family.